MAX5531ETC+ Maxim Integrated Products, MAX5531ETC+ Datasheet - Page 18

• Manufacturer Part Number: MAX5531ETC+
• Description: IC DAC 12BIT SGL ULP 12-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX5531ETC+

• Settling Time: 660µs
• Number Of Bits: 12
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 1.35mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 12-TQFN Exposed Pad
• Number Of Dac Outputs: 1
• Resolution: 12 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Current: 0.007 mA
• Voltage Reference: Internal
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Ultra-Low-Power, 12-Bit,
Voltage-Output DACs
Bypass the power supply with a 0.1µF capacitor to GND.
Minimize lengths to reduce lead inductance. If noise
becomes an issue, use shielding and/or ferrite beads to
increase isolation. For the thin QFN package, connect
the exposed paddle to ground.
Figure 8. Bipolar Output Circuit
18
Figure 10. Software-Configurable Output Gain
REFIN
______________________________________________________________________________________
MAX5530
SCLK
CS1
CS2
DIN
DAC
REFIN
Power Supply and Bypassing
MAX5530
DAC
1.8V ≤ V
10kΩ
DD
OUT
FB
≤ 5.5V
FB
Considerations
10kΩ
V+
V-
VOUT
V
OUT
H
W
L
Digital and AC transient signals coupling to GND can
create noise at the output. Use proper grounding tech-
niques, such as a multilayer board with a low-inductance
ground plane. Wire-wrapped boards and sockets are not
recommended. For optimum system performance, use
printed circuit (PC) boards. Good PC board ground lay-
out minimizes crosstalk between DAC outputs, reference
inputs, and digital inputs. Reduce crosstalk by keeping
analog lines away from digital lines.
Figure 9. Separate Force-Sense Outputs Create Unity and
Greater-than-Unity DAC Gains Using the Same Reference
TRANSISTOR COUNT: 10,688
PROCESS: BiCMOS
RATIOMETRIC
MAX5401
SOT-POT
5PPM/°C
TEMPCO
100kΩ
V
OUT
REFIN
N
N
DAC
POT
DAC
IS THE NUMERIC VALUE OF THE POT INPUT CODE.
IS THE NUMERIC VALUE OF THE DAC INPUT CODE.
Layout Considerations
V
MAX5530
OUT
=
V
REFIN
4096
Chip Information
× N
DAC
(
1 +
FB
OUT
255 - N
255
POT
R2
R1
)
V
OUT